SN74LVC139APWRE4

Overview

The SN74LVC139APWRE4 is a dual 2-line to 4-line decoder/demultiplexer from the Texas Instruments LVC logic family. It operates within a supply voltage range of 1.65 V to 3.6 V and supports an operating temperature range of -40°C to +85°C. The device features a maximum propagation delay of 6.2 ns and includes active-low enable inputs that function as data lines in demultiplexing applications. Inputs accept voltages up to 5.5 V, allowing compatibility with 3.3-V or 5-V driving circuits.

Feature Summary

• Dual independent 2-to-4 decoding and demultiplexing circuits integrated into a single package
• Fully buffered inputs compatible with 3.3-V and 5-V driving devices for mixed-voltage system translation
• Active-low enable inputs capable of functioning as data lines during demultiplexing operations

Applications

• Mixed 3.3-V/5-V system environment signal translation
• Demultiplexing applications utilizing active-low enable inputs as data lines
• General-purpose digital decoding functions requiring low-voltage operation

Procurement Notes

Verify the specific ordering suffix 'E4' indicates lead-free composition and RoHS compliance per Texas Instruments standards. Confirm the PW package designation corresponds to the TSSOP form factor. Ensure the component status aligns with current production data sheets before finalizing procurement specifications.

Selection Notes

Select this component when dual independent decoders are required within a single footprint. The LVC series offers low power consumption suitable for battery-operated systems. Verify input voltage tolerance requirements against the 5.5 V limit if interfacing with higher voltage logic families.

Part Context

This part belongs to the SN74LVC139A family of dual 2-line to 4-line decoders. The 'E4' suffix typically denotes environmental compliance, specifically lead-free manufacturing processes. The 'PW' suffix identifies the plastic thin-shrink small-outline package variant manufactured by Texas Instruments.

Replacement Considerations

SN74LVC139APWR serves as a direct tape-and-reel alternative within the same package type.